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Berkenhoff GmbH Patents
Assignee:
Berkenhoff GmbH
Address:
Heuchelheim, DE
No. of patents:
24
Patents:












Patent Number Title Of Patent Date Issued
D432396 Wire spool October 24, 2000
6806433 High-strength erosion electrode October 19, 2004
The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40% zinc or, alternatively, a steel core an
6794597 Wire electrode with a structured interface surface September 21, 2004
In order to achieve a reduction in wear of the wire guide rollers, apart from an improvement in the cutting speed and an improvement in current conduction, a wire electrode for spark erosion cutting of metals etc., comprising either a homogenous center (1) made of a metal or of a metal
6781081 Wire electrode for spark erosion cutting August 24, 2004
A wire electrode for spark erosion cutting of metals, electrically-conducting ceramics etc., comprising either a homogenous centre (1) made of a metal or of a metal alloy, or a composite centre made from a steel core with a coating of copper or copper alloy, wherein the wire electrod
6566622 Wire electrode May 20, 2003
A wire electrode, and a method for making it, for use in spark-erosive cutting having an electrically conducting core essentially absorbing the tensile forces. The wire electrode has furthermore a coating which wears during erosion, which coating consists of two layers. Such a wire e
6448527 High-strength erosion electrode September 10, 2002
The invention concerns a high-strength erosion electrode having good electrical conductivity. The erosion electrode is made up of a steel core, an intermediate layer of copper or a copper-containing alloy, and an outer layer containing at least 40 % zinc. The steel core has a patented
6447930 Wire electrode and process for producing a wire electrode, particular for a spark erosion proces September 10, 2002
In order to produce a wire electrode having a core consisting of a copper/zinc alloy and to produce a specific sheath layer, the sheath layer is coated onto the core at a temperature at which no diffusion occurs. The wire electrode is subsequently heated at a heating speed higher than
6348667 Wire electrode for the spark-erosive cutting of hard metal February 19, 2002
A method and a wire electrode for the spark-erosive cutting of hard metal, whereby the wire electrode has a core and at least one outer coat surrounding the core and wearing during cutting. To avoid corrosion, as, for example, pitting, a wire electrode is chosen, the wearing outer coat
5981090 Pins for electronic assemblies November 9, 1999
The pin for electronic assemblies according to the present invention consists of a core alloy with 0.2 to 1.5 wt. % Ag, the remainder copper, whereby at least the contact surface of the pin is provided with one or several highly conductive and/or easily solderable coatings. With this not
5919322 Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like July 6, 1999
A high-temperature, nickel-free alloy, in particular for spectacle frames, jewelry, etc. With the following composition in percentages by weight:Zn 3.0-7.0%Mn 8.0-13.0%Fe 0.5-3.5%Al 4.5-8.00Cu the remainder.
5908517 Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like June 1, 1999
A high-temperature, nickel-free alloy, in particular for spectacle frames, jewelry, etc. with the following composition in percentages by weight:
5762726 Wire electrode and process for producing a wire electrode, particular for a spark erosion proces June 9, 1998
In order to produce a wire electrode having a core consisting of a copper/zinc alloy and to produce a specific sheath layer, the sheath layer is coated onto the core at a temperature at which no diffusion occurs. The wire electrode is subsequently heated at a heating speed higher than
5270001 Alloy, in particular for use in the manufacture of jewelry, frames for glass, and the like December 14, 1993
An alloy, in particular for use in the manufacture of jewelry, frames for glasses, and the like. In order to be able to manufacture jewelry, frames for glasses, and the like of a nickel-free alloy inexpensively and well, the following alloy has been produced according to the invention, w
5259898 Alloy for spectacle wire frames and electronic component parts November 9, 1993
An alloy, in particular for the manufacture of spectacle frames, and a spectacle wire or a spectacle frame and connecting wires for electronic component parts manufactured using the alloy of the invention. In order to obtain good mechanical characteristics, for example, of the spectacle
5248104 Wire-unwinding device September 28, 1993
A wire-unwinding device in which wire can be unwound from a very large wire drum such that the direction of curvature of the wire is maintained and alternating bendings of the wire are avoided. The wire is guided over a stationary first guide pulley, a second guide pulley, which is chang
5231270 Wire electrode July 27, 1993
A wire electrode for cutting of workpieces by means of spark erosion, which consists of an eroding wire with or without a jacket, with at least the jacket containing one or several metallic alloy parts having a low volatilization temperature, such as zinc, cadmium, lead, antimony, bi
5199162 Method for the manufacture of a wire-electrode for spark-erosive cutting April 6, 1993
A wire-electrode arrangement for effecting a spark-erosive cutting and a method for the manufacture of a wire electrode. In order to be able to cut non-conductive materials, a plus potential and also a minus potential can be applied to the electrode, since the wire electrode is formed by
5140125 Wire-electrode arrangement for spark-erosive cutting August 18, 1992
A wire-electrode arrangement for effecting a spark-erosive cutting and a method for the manufacture of a wire electrode. In order to be able to cut non-conductive materials, a plus potential and also a minus potential can be applied to the electrode, since the wire electrode is formed by
5078032 Device for cutting wire January 7, 1992
A device for cutting wire which includes at least one rotating knife supported on a rotating knife carrier and a counter-tool. The counter-tool includes a cutting blade rotating about a vertical first axis and having a central opening therethrough and adapted to receive the wire to be cu
4935594 Eroding electrode, in particular a wire electrode for the sparkerosive working June 19, 1990
A method for manufacturing an eroding electrode which has an outer layer consisting of a structural composition having a resistance against erosive wear characteristic many times greater than the common eroding electrode. The outer layer initially consists of one or several coatings of a
4924050 Wire electrode for use in spark-erosive cutting May 8, 1990
A wire electrode for spark-erosive cutting includes a core area and an outer coating. The wire electrode is reduced in cross section in order to achieve a high surface quality characteristic and a high strength characteristic, is subsequently diffusion annealed in an oxidizing atmosp
4766280 Wire electrode for the spark erosive cutting August 23, 1988
To increase the cutting performance of a wire electrode for electroerosive cutting, the surface of the wire electrode is provided with projections and recesses created by twisting the wire electrode of polygonal cross section about its axis.
4701302 Filler metal for welding October 20, 1987
A filler metal for the welding of steel and iron, copper and copper alloys, with and without surface finishing, which shows a good wetting and also a good flow for surface-treated base metals, which does not form any scales and any visible crusting and does not build up too much, thus ha
4631237 Wire electrode for spark-eroding systems December 23, 1986
A wire electrode for a spark-eroding system for erosion cutting of workpieces using intermittent electrical charges includes a core of a current-conducting material and a wire coating of a material with a lower evaporation temperature, for example zinc. The core consists of one of the

 
 
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